Air quality monitor



FIG. 1 is a photo image showing a perspective view of the air quality monitor, showing our new design;

FIG. 2 is a photo image showing a top plan view thereof;

FIG. 3 is a photo image showing a bottom plan view thereof;

FIG. 4 is a photo image showing a front elevational view thereof;

FIG. 5 is a photo image showing a left side elevational view thereof;

FIG. 6 is a photo image showing a right side elevational view thereof;

FIG. 7 is a photo image showing a rear elevational view thereof; and,

FIG. 8 is a photo image showing an enlargement of FIG. 1. 

CLAIM We claim the ornamental design for an air quality monitor, as shown and described. 